Lithium Ion batteries are dangerous chemistries that are "protected" by electronic computers soldered onto the batteries to keep an eye on voltage/temperature/etc. etc. But in extreme circumstances (such as flooding, or great impacts, etc. etc.), there's nothing that computer can do to prevent an explosive result. Once a Li-ion catches on fire, the electrolyte is itself explosively flammable, and things get out of hand very quickly.
These sorts of events will be common as Teslas (and electric cars) exist within catastrophic zones. This explosive reaction is larger, faster, and more dangerous than even gasoline fires. Doubly so with the "Electric Locks stop working" issue in Teslas (and since manual releases are so difficult for so many people to figure out, many people have already died by getting locked into a Tesla electrical fire).
Fortunately, no one was hurt during this particular incident. But it is a good reminder of the dangers of this particular chemistry.
Solid State Batteries are likely the next advancement that can hamper explosive results like this. So I think EVs have a way to fix this problem in the long term. But today, with today's level of technology, we have to keep this explosion risk in mind.
A similar ICE vehicle would just spill oil & fuel all over the place in the same situation, then get flipped in the used car market as a rusty time bomb for the unwitting new owner. tl;dr: evacuate.
This Tesla fire clearly took out the tow-truck though. Its obvious from the burnt ashes that this charred skeleton is a truck (likely the tow-truck) + Tesla.
Remember, if the battery and power module were water proof, this wouldn't be possible. Tesla denies warranty for water ingress in motors and battery packs regularly.
Do Firefighters have to babysit an ICE car for hours and keep guzzling tens-of-thousands of gallons of water to keep the fire suppressed?
Your attempts at whataboutism are... hilariously misplaced. Any comparison between ICE and Li-ion here is hilariously one sided. The amount of fire-risk in this situation is evident from the multitude of Teslas that have exploded in the past.